/* layout */
div#app {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 1280px;
  margin: 0 auto;
}

@media screen and (max-width: 1024px) {
  div#app {
    width: 100vw;
  }
}

header {
  flex: auto;
  min-width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100px;
}

nav {
  flex: auto;
  min-width: 100%;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  height: 40px;
  background-color: #003388;
}

main {
  flex: auto;
  min-width: 100%;
  min-height: calc(100vh - 140px);
}

footer {
  flex: auto;
  min-width: 100%;
  height: 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: #e3e3e3;
}

a {
  text-decoration: none;
}

ul {
  margin: 0;
  padding: 0;
}

img {
  width: 100%;
}

.w80 {
  width: 80%;
  margin: 10px auto;
}

.box {
  font-size: 14px;
}

a.button {
  display: inline-block;
  width: fit-content;
  height: 24px;
  line-height: 24px;
  text-align: center;
  margin: 0 4px;
  padding: 2px 6px;
  border: rgb(110, 110, 255) solid 1px;
  border-radius: 4px;
  background-color: rgb(70, 70, 255);
  color: white;
  font-weight: bold;
  letter-spacing: 2px;
}

a.button:hover {
  background-color: rgb(0, 0, 255);
}

a.disabled {
  pointer-events: none;
  opacity: 0.5;
}

div.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 4px;
  border-bottom: 4px dashed #06c;
}
